scholarly journals Study and Analysis of Optimized Site-selection for Urban Green Space by Using Fuzzy logic

2012 ◽  
Vol 2 (2) ◽  
Author(s):  
Atefe Ahmadi ◽  
Nahid Sajadian ◽  
H. Jalaliyan ◽  
Narges Naghibirokni
Keyword(s):  
Fuzzy Logic ◽  
Site Selection ◽  
Green Space ◽  
Urban Green Space ◽  
Green Spaces ◽  
Land Uses ◽  
Urban Green ◽  
Significant Difference ◽  
Optimized Distribution ◽  
Space Case

Public land-uses in many cities are not able to present desirable services to citizens because of some problems such as high population density, lack of regularity in establishment and site-selection, and lack of attention to accessibility radius and population thresholds. This problem is magnified in big cities especially for land-uses such as green spaces. In urban supplying services only increasing of services is not a reason for proper supplying services but more important is optimized distribution of these centers. In this regard, present paper based on descriptive-analytical method as well as GIS follows optimized distribution of green space in the cities according to site-selection principals of urban green space. Case study is region 7 of Ahvaz municipality which has a population of 150215 persons and 2.78 green space capita, and this amount in addition to significant difference to standards determined by environment united nations (20-25 for a person), has been not distributed optimally. Regarding this city locating warm and dry zone of the earth, it is very important to select an optimized site for green spaces .Hence, in order to select a proper and optimized site for the green spaces according to site-selection principals layers (criteria) such as vicinity to residential centers, educational centers, cultural centers, urban infrastructures and establishments, commercial centers, hygienic centers, industrial centers and wastelands and etc. have been used. Research results in fuzzy logic valued region lands based on their importance in recognizing optimized location. Afterward, these lands were compared with land-use map and it was distinguished that lands with very good, good, and medium degree were placed close to residential, cultural, and educational centers which had more governmental ownership, and lands with weak and very weak degree were placed far from compatible land-uses, and were more placed close to industrial, administrative, hygienic sportive, and commercial centers which often had private ownership, therefore, they were not suggested for creating green space.

scholarly journals Evaluation of the Equity and Regional Management of Some Urban Green Space Ecosystem Services: A Case Study of Main Urban Area of Xi’an City

Forests ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 813
Author(s):  
Hui Dang ◽  
Jing Li ◽  
Yumeng Zhang ◽  
Zixiang Zhou
Keyword(s):  
Ecosystem Services ◽  
Carbon Sequestration ◽  
Urban Areas ◽  
Green Space ◽  
Well Being ◽  
Urban Green Space ◽  
Green Spaces ◽  
Deposition Flux ◽  
Urban Green ◽  
Xi’An City

Urban green spaces can provide many types of ecosystem services for residents. An imbalance in the pattern of green spaces leads to an inequality of the benefits of such spaces. Given the current situation of environmental problems and the basic geographical conditions of Xi’an City, this study evaluated and mapped four kinds of ecosystem services from the perspective of equity: biodiversity, carbon sequestration, air purification, and climate regulation. Regionalization with dynamically constrained agglomerative clustering and partitioning (REDCAP) was used to obtain the partition groups of ecosystem services. The results indicate that first, the complexity of the urban green space community is low, and the level of biodiversity needs to be improved. The dry deposition flux of particulate matter (PM2.5) decreases from north to south, and green spaces enhance the adsorption of PM2.5. Carbon sequestration in the south and east is higher than that in the north and west, respectively. The average surface temperature in green spaces is lower than that in other urban areas. Second, urban green space resources in the study area are unevenly distributed. Therefore, ecosystem services in different areas are inequitable. Finally, based on the regionalization of integrated ecosystem services, an ecosystem services cluster was developed. This included 913 grid spaces, 12 partitions, and 5 clusters, which can provide a reference for distinct levels of ecosystem services management. This can assist urban managers who can use these indicators of ecosystem service levels for planning and guiding the overall development pattern of green spaces. The benefits would be a maximization of the ecological functions of green spaces, an improvement of the sustainable development of the city, and an improvement of people’s well-being.

Noise perception assessment in urban green spaces using soundwalk approach

2021 ◽  
Vol 263 (1) ◽  
pp. 5780-5791
Author(s):  
Omid Samani ◽  
Verena Zapf ◽  
M. Ercan Altinsoy
Keyword(s):  
Green Space ◽  
Traffic Noise ◽  
Urban Green Space ◽  
Green Spaces ◽  
Noise Emission ◽  
Visual Effect ◽  
Technical Noise ◽  
Urban Green ◽  
Urban Green Spaces ◽  
The City

Urban green spaces are intended to provide citizens with calm environments free of annoying city noises. This requires a thorough understanding of noise emission and related exposure to sounds in green spaces. This research investigates noise perception in various spots in an urban green space. For this purpose, the study has been conducted in the grand garden of the city of Dresden. The garden covers 1.8 square kilometers of various landscapes, including water streams, park railways, fountains, bridges, roads for bicycles and pedestrians etc. Noise perception was investigated at eleven spots with emphasis on four noise types: nature noise, human noise, traffic noise, and technical noise. In parallel, audio-visual recordings were conducted for each spot to identify the connection between the perceptual measures and the psychoacoustic parameters. These spots are categorized based on the resulting perception and psychoacoustic parameters. In addition, the visual effect of each spot on final perception is investigated. Eventually, annoyance for each spot is identified based on the corresponding participants' perception and is associated with the relevant psychoacoustic parameters.

Dismantling the fence for social justice? Evidence based on the inequity of urban green space accessibility in the central urban area of Beijing

2018 ◽  
Vol 47 (4) ◽  
pp. 626-644 ◽  
Author(s):  
Jiayu Wu ◽  
Qingsong He ◽  
Yunwen Chen ◽  
Jian Lin ◽  
Shantong Wang
Keyword(s):  
Social Justice ◽  
Urban Area ◽  
Green Space ◽  
Ordinary Least Squares ◽  
Urban Green Space ◽  
Spatial Accessibility ◽  
Green Spaces ◽  
Planning System ◽  
Economic Disparities ◽  
Urban Green

Gated communities have become a common feature in recent decades and have been shown to lead to social inequality to the detriment of the poorest social classes. Because access to urban green space is crucial for both physical health and spiritual pleasure, it is often regarded as an indicator of social justice; however, there are many references to the current inequity in urban green space accessibility. Our study aimed first to measure the potential spatial accessibility of green space in the central urban area of Beijing; then to evaluate the socio-economic disparities in green space accessibility; and finally, to assess the effect of the policy of “opening up gated residential communities” on urban green space accessibility. We adopt the Gaussian-based two-step floating catchment to assess the spatial accessibility of green spaces in each residential zone in the central area of Beijing, and the ordinary least squares model was used to evaluate the inequity in accessibility caused by socio-economic disparities. The results reveal that lower income residential zones have remarkably lower access to green spaces. Next, by comparing the differences in accessibility equity between two comparable scenarios in which all communities have dismantled their fences, we unexpectedly find that the inequity of access to urban green space does not improve but becomes more pronounced. We attribute this result to socio-spatial polarization. Our findings can be used by urban planners to target current urban planning system reform and by policymakers to focus closely on the gradual spatial polarization between the rich and the poor.

scholarly journals Challenges of Urban Green Space and Its Accessibility in Planning District-12, Mysuru City

2021 ◽  
Vol 10 (1) ◽  
pp. 137-141
Author(s):  
Yashaswini S* ◽  
Shankar B
Keyword(s):  
Land Use ◽  
Green Space ◽  
City Planning ◽  
Urban Green Space ◽  
Green Spaces ◽  
Planning System ◽  
Urban Green ◽  
Urban Green Spaces ◽  
Wide Range ◽  
The City

Improving the Accessibility of Urban Green Space (UGS) is an integral part of city planning system. People with better access to green space enjoy a wide range of health benefits. Therefore, it is a crucial element to be taken care and nourished in a land use framework. Mysore City is one of the planned large cities in India. The City had a population of about 0.9 million in 2011 and it is estimated to cross the million mark by 2021. There is a growing consciousness on health and wellbeing among the people resulting an increasing demand for urban green spaces both at neighbourhood and city levels. The accessibility helps in promoting usage of UGS and maintaining the balance in environment within the city areas. The main aim of this paper is to study the existing scenario of the UGS within the planning district-12 and to analyse the green space accessibility. The land use of Mysuru city is analysed to understand the city and the micro level land use analysis of Planning district-12 is made. The existing scenario of the UGS within the study area and its accessibility is analysed using different accessibility indicators. Considering the key findings, issues and challenges are identified. Later the suggestions and recommendations for the identified issues is proposed to enhance the green spaces quality and accessibility at neighbourhood levels. The Accessible Natural Green space Standard (ANGst) type of accessibility analysis has been carried to know UGS functionality. Henceforth urban green space network at Planning District levels (local levels) in the City of Mysuru is prepared as a model which can be implemented to the city as whole at the later stages

scholarly journals Implementation and Evaluation of Urban Green Space Supply for Debre Berhan Town, Ethiopia

2021 ◽  
Author(s):  
Awlachew Dejen Dejen ◽  
Ayele Behaylu Yitagesu ◽  
Dodge Getachew Aysassa
Keyword(s):  
Urban Planning ◽  
Green Space ◽  
Outer Part ◽  
Urban Green Space ◽  
World Health ◽  
Sustainable Urban Development ◽  
Land Uses ◽  
Urban Green ◽  
Debre Berhan ◽  
The Town

Abstract Urban green space (UGS) is part of urban land covered with vegetation which has an immense benefit for sustainable urban development. The main objective of this study was urban green space supply analysis and evaluation for Debre Berhan town, Ethiopia. To realize this objective, we generated UGSs information by using normalized difference vegetation index (NDVI) which was calculated from Sentinel 2 satellite image. Then, the result of NDVI calculation was classified as small vegetation and high vegetation with over all accuracy of 87.29% and kappa value of 0.808. According to the result, there are 15.85% and 1.55% supply of urban green space for small and high vegetation respectively. In addition, the UGS supply in inner and outer part of the town for each land use was quantified. The result showed that in the inner part of the town, service, green area, and vacant land uses have 30.12%, 30.06%, and 13.32% of UGS supply respectively. Conversely, recreation, commercial, and administration land uses are least supplied with 0.11%, 0.26%, and 0.40% share of UGS. Furthermore, the UGS supply was evaluated against the new urban planning strategy of Ethiopia (30% coverage) and World Health Organization standard (9m2 per person). The coverage of small vegetation and high vegetation was 15.85% and 1.55% respectively. The UGS per capita for small vegetation was about 75.16m2 while the value for high vegetation was 7.33m2. The results of our analysis can be used as an input for urban planning and master plan revision.

scholarly journals Residents’ Spatial Image Perception of Urban Green Space through Cognitive Mapping: The Case of Beijing, China

Forests ◽  
2021 ◽  
Vol 12 (12) ◽  
pp. 1614
Author(s):  
Yilei Hou ◽  
Yibing Qu ◽  
Zheng Zhao ◽  
Jinyu Shen ◽  
Yali Wen
Keyword(s):  
Green Space ◽  
Cognitive Maps ◽  
Multinomial Logit Model ◽  
Urban Green Space ◽  
Cognitive Map ◽  
Green Spaces ◽  
Image Perception ◽  
Urban Green ◽  
Urban Green Spaces ◽  
Spatial Image

The fundamental purpose of future urban development is to meet residents’ yearning for a better city life with the rapid development of urbanization. This study uses a multinomial logit model and cognitive map to evaluate residents’ spatial image perception of urban green space. A field study and data collection were conducted from July to August 2019, using the typical urban green space area in Beijing as the research object. Based on 375 valid questionnaires and 139 cognitive maps, the study analyzed and evaluated the image characteristics and differences of residents to the urban green space under different conditions. The results show the following. First, there is a close relationship between residents’ preference and the characteristics of urban green spaces, especially the working and living environment and characteristics will have a great influence on it. Second, the cognitive map drawn by Beijing residents can be divided into sequential and spatial cognitive maps, and the image perception shows diversified characteristics. However, the perception is relatively superficial overall, and most are simple line maps. Besides, according to the analysis of the elements of the cognitive map, the advantages and disadvantages of each type of urban green space are closely related to their geographical location and internal structure. This study has two key findings. First, the construction of urban green spaces in various cities should be carried out according to local conditions, considering the scientific basis and reasonableness of urban green space in terms of structural setting. Second, the multinomial logit model and cognitive map can effectively quantify the subjective evaluation of respondents’ spatial perceptions in a relatively simple manner, which can be further expanded in the application system design of the method.

A MSPA-Based Approach of Urban Green Space System Planning

2012 ◽  
Vol 518-523 ◽  
pp. 5972-5979
Author(s):  
Qing Chang ◽  
Yao Qiu ◽  
Xue Li ◽  
Jian Sheng Wu
Keyword(s):  
Green Infrastructure ◽  
Green Space ◽  
Life Support ◽  
Urban Green Space ◽  
Green Spaces ◽  
Spatial Pattern Analysis ◽  
Space System ◽  
Urban Green ◽  
Urban Green Spaces ◽  
Land Use Decisions

Urban green spaces are considered as the life support system in a city, if systematically planned, developed, and maintained, they may provide various ecosystem services in a sustainable way. By integrating the morphological spatial pattern analysis (MSPA) and the green infrastructure (GI) network based on GIS, this study provided an urban green space planning method to guide urban sustainable spatial development and land use decisions in the Longgang District of Shenzhen in China. The approach has a robust performance in identifying the vital hubs and linkages in the urban green space system. It is hoped that this plan model based on MSPA, the function connectivity of urban green spaces could be farther strengthened so that some key zones in landscape pattern could be protected in the future development.

Versatile green: an alternative perspective on urban green space in late nineteenth-century Antwerp

Urban History ◽  
2014 ◽  
Vol 42 (1) ◽  
pp. 89-112
Author(s):  
BART TRITSMANS
Keyword(s):  
Green Space ◽  
Urban Green Space ◽  
Urban Fringe ◽  
Green Spaces ◽  
Late Nineteenth Century ◽  
Substantial Part ◽  
Urban Green ◽  
Urban Green Spaces ◽  
History Of ◽  
Official Sources

ABSTRACTThis article argues that a one-sided focus on official sources has dominated historical research on urban green space. The absence of the users’ perspective obscures a substantial part of its significance. This article, which aims at complementing rather than contradicting existing research, will show that the different perspectives and practices of city dwellers widen our understanding of the history of urban green spaces. The article will also consider the value of often marginalized, unofficial green spaces like ramparts and wastelands at the urban fringe.

scholarly journals The Relationship between Social Cohesion and Urban Green Space: An Avenue for Health Promotion

2019 ◽  
Vol 16 (3) ◽  
pp. 452 ◽  
Author(s):  
Viniece Jennings ◽  
Omoshalewa Bamkole
Keyword(s):  
Social Cohesion ◽  
Psychological Health ◽  
Green Space ◽  
Well Being ◽  
Urban Green Space ◽  
Green Spaces ◽  
Urban Green ◽  
Urban Green Spaces ◽  
The Relationship ◽  
Health And Well Being

Social cohesion involves the interpersonal dynamics and sense of connection among people. Increased social cohesion can be associated with various physical and psychological health benefits. The presence of urban green spaces can encourage positive social interactions that cultivate social cohesion in ways that enhance health and well-being. Urban green spaces have also been linked to positive health behaviors and outcomes including increased physical activity and social engagement. Understanding the relationship between social cohesion and urban green space is important for informing holistic approaches to health. In this article, we discuss how positive interactions in urban green space can catalyze social cohesion, social capital and critical health-promoting behaviors that may enhance psychological health and well-being. We also summarize the strengths and limitations of previous studies and suggest directions for future research.

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